📊 Generate an SEO PDF report from HTML with Gotenberg and Claude Opus 4.6

⚡ 5 views · 📊 Market Research & Insights

Description

What this workflow does

This workflow takes any website URL, extracts its HTML content, and uses an AI Agent (Claude Opus 4.6) to perform a comprehensive SEO analysis. The AI evaluates the page structure, meta tags, heading hierarchy, link profile, image optimization, and more — then generates a beautifully formatted HTML report. Finally, it converts the report into a PDF using Gotenberg, a free and open-source HTML-to-PDF engine.

Workflow steps:

1. Form submission — pass the URL you want to analyze
2. HTML extraction — fetches the full HTML content from the URL
3. AI SEO analysis — Claude Opus 4.6 analyzes the HTML and generates a detailed SEO report in HTML format
4. File conversion — converts the HTML output into a file (index.html) for Gotenberg
5. PDF generation — sends the file to Gotenberg and returns the final PDF

Setup Guide

Gotenberg — Choose one of 3 options:

Option 1 — Demo URL (testing only): Use https://demo.gotenberg.dev as the URL in the HTTP Request node. This is a public instance with rate limits — do not use in production.

Option 2 — Docker Compose (self-hosted n8n): Add Gotenberg to the same docker-compose.yml where your n8n service is defined:

services:
  # ... your n8n service ...

  gotenberg:
    image: gotenberg/gotenberg:8
    restart: always

Run docker compose up -d to restart your stack. Gotenberg will be available at http://gotenberg:3000 from inside your n8n container.

Option 3 — Google Cloud Run (n8n Cloud or no Docker access): Deploy gotenberg/gotenberg:8 as a Cloud Run service via the Google Cloud Console. Set the container port to 3000, memory to 1 GiB, and use the generated URL as your endpoint.

📖 Full Gotenberg docs: gotenberg.dev/docs

AI Model

This workflow uses Claude Opus 4.6 via the Anthropic API. You can swap it for OpenAI, Google, or Ollama — just replace the Chat Model node.

Requirements

• Anthropic API key (or alternative LLM provider)
• Gotenberg instance (demo URL included for quick testing)
• No other external services or paid tools required

Feel free to contact me via LinkedIn if you have any questions! 👋🏻

🔗 Nodes Used

HTTP Request, AI Agent, Anthropic Chat Model, n8n Form Trigger, Convert to File

📥 Import

Download workflow.json and import into n8n: Workflow menu → Import from File

📖 Importing guide · 🔑 Credential setup